Pith Number

pith:XZGSRG6O

pith:2012:XZGSRG6OS4HRYB3OWIM7BCBSFB

not attested not anchored not stored refs pending

Time-resolved Ultraviolet Spectroscopy of the M-dwarf GJ 876 Exoplanetary System

Aki Roberge (GSFC), Cynthia S. Froning (CASA/Colorado), Feng Tian (Tsinghua University), Jeffrey L. Linsky (JILA/Colorado), Kevin France (CASA/Colorado)

arxiv:1204.1976 v1 · 2012-04-09 · astro-ph.EP · astro-ph.SR

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XZGSRG6OS4HRYB3OWIM7BCBSFB}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T01:57:55.616659Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

be4d289bce970f1c076eb219f08832284582a69b20d0c3eb2d8c63d883ec0cf2

Aliases

arxiv: 1204.1976 · arxiv_version: 1204.1976v1 · doi: 10.48550/arxiv.1204.1976 · pith_short_12: XZGSRG6OS4HR · pith_short_16: XZGSRG6OS4HRYB3O · pith_short_8: XZGSRG6O

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/XZGSRG6OS4HRYB3OWIM7BCBSFB \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: be4d289bce970f1c076eb219f08832284582a69b20d0c3eb2d8c63d883ec0cf2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3a6b3a0deb3ab0ac9baf728b6dc30b557cad61467e1ea70a1a5771d1b5cd1bd8",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2012-04-09T20:00:04Z",
    "title_canon_sha256": "eeb4e19d94b5a51b7214fb4b8fdc1e0ceea11a1e7df5470eeb4f46fc0097a687"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.1976",
    "kind": "arxiv",
    "version": 1
  }
}